Radio log and indicating device



April 6 ,1926;

v lagig.' ff

INVENTOR FHA/VK D.v BLAIR `April 6 1926.

. 1,579,501 F. D. BLAIR RADIO LOG AND INDICATING DEVICE Filed Jan. l5, 1925 2 Sheets-Sheet 2 INVENTOR FRANK D. BLAIR gg @a g BY Z I f WW l a; A TTORNE YS" I Patented` Apr. 6, 1926.A

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1,579,561- -PATE'N'T oiF'lfClE.

l D. BLAIR, OF MOUND, MINNESOTA.

RADIO LOG AND IN'DICATING DEVICE.

Application led January To all whom, it may concern.' Y

Be it known-that I, F RANK D. BLAIR, a citizen of the United" Srta-tes, residing at Mound,.in the county of Hennepin and State of Minnesota, have invented certain new and 'useful Improvements in a Radio Log and Indicating Devicegkand I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use Athe same.v This. invention relates to a radio receiving set ,and particularly to a device used in conjunction with a tuning control member of such set and co-operating with such member to form a log of stations received and -to form an identification means of the stations received. It has heretofore been the common practice to have movable timing control members on receiving sets and 4have numbered graduations past which said members were moved. Yhen the tuning" member or members were. adjusted for certain stations a record could be made of the numbers alined with the said member or members and the. operator could then keep a log of the stations received and the positions of the tuning member therefor. Such a log was kept on a separate card or book and the use thereof is quite inconvenient. l

It is an object ofthis invention, therefore, to provide means co-operating with a tuningv control member adapted to receive identifi- `cation members of various stations so that said latter vmembers will at once indicate the station, and the tuning control member can quickly be Vpbsitioned .for-such station by merely being turned into alinement with said identification member.

. It is a further object of the invention to' provide a plate disposed about the path ofthe tuning control member, which plate has formed therein a multiplicity of small channels or sockets, which channels or sockets are adapted to have inserted thereinsmall iden- `titication members bearing the name or indication of a station received.

vIt, is more specifically an object of the invention to provide a. plate adapted to be disposed about the path of a swinging tuningl control member having formed therein a multiplicity of radially disposed channels adapted to receive identification members, said plate and control members also having inner engaging means for holding said conthe condensers or vario-couplers.

15, 1925. serial nu. 2,568.

taken on the^line 3 3 of Fig. 1, as indicatedI by the arrows;

Fig. 4 is a fragmentary vertical section taken'. on the line 4- 4 of Fig. 1, as indicated by the arrows;

5 lis a face 'view of one of the identifcation members used;

Fig. 6 is a` view infront elevation of amodified form of the device;

' Fig. 7 is a view in horizontal section taken on the lineA 7 7 of Fig. 61,

Fig. 8 is a section taken substantially on the line 8 8 of Fig. 1, showing a specific modified structure of the plate used.

Referring" to the drawings, a cabinet 1 0 is shown having a front wall 10, a base 10b and a rear wall 10, the latter being shown as hinged at its lower edge so as to swing outwardly. The cabinet 10 may form the ordinary cabinet which encloses theyreceiving apparatus of a receiving set vor it may represent a cabinet having thereinonlv a portion of theapparatus, such as the parts which are moved lfor tuning, such as If the cabinet i`s'` used merely for vadjusting parts, the same will be provided with a pair of binding posts 11, by means of which said parts can vbe connected ,to the rest of the apparatus which will usually be dispose'dfin a separate cabinet. rhile the cabinetA 10 may take various shapes, in the embodiment .of the invention illustrated, the same is shown as having a vertical rear wall and an up.

wardly inclined front wall or panel 10. W'hether the cabinet is used as containing all of the apparatus or only part thereof, the same will be provided with -a`t-uning con# looy dotted lines. In accordance with the present invention aplate 14 is disposed against the face of panel a and about the path of the "swinging member 12. While the plate 14 may take various shapes, depending upon the path of the tuning control member, in the embodiment of the invention shown in F 1, said plate is of semi-annular form an 1 s of approximately 180 degrees in ex-l tent. rlhe plate 14 has formed therein a multiplicity of radially disposed channels or sockets 14a and said plate has disposed in front thereof, a member 15 of transpar- I 4'ent material, such as glass or celluloid, said member being f of the same shape as plate 14. While the members l14 and 15 may be secured to thepanel and held thereon in any suitable manner, in the embodiment of the invention illustrated the same are shown as supported and held in place by an angle `member 16, said member having a semi-circular portion disposed within and overlapping the outer edge of the concave side of fmembers 14 and 15 and extending along and overlapping the bottom side thereof, said member 16 being shown as secured to panel 10EL by suitable screws. The member 16 has small holes or depressions 16a spaced about its semi-circular portion with which a projection 12a on ,the member 12 co-o'perates,

- said member 12,i preferably beingresiliently ,infrom their outer ends small flat identi-V pressed toward said member 16 and being controlled by a handle knob 17 by which the member 12 may be moved. The holes 16*L are alined substantially centrally with the channels 14. The channels or sockets 14a are adapted to receive and have inserted therepanel 21, which-panel forms the front of'a rectangular cabinet 22. V 'Said cabinet 22 may, like the cabinet 10, contain all or only part of the ap aratus 'of a radio receiving set. The member 20 also can be moved to be connected to any desired form of tuning apparatus, but in the embodiment of the invention illustrated, thesame is shown as fconnected to the movable plate 23 of 'a plate condenser, a stationary plate thereof being indicated at 24. A plate or memberof sheet v material 25 is secured to the panel 21 by suitable screws extending through the end.

portions thereof,J which member 25 has a slot 25 therethrough through which the member 20 projects, said slot being surrounded by an outwardly extending iange 25". The vmember 25 has formed therein and extending substantially at right angles to and at each side of the flange 25", sockets or channels- 25e, the channels at opposite sides of slot 25, preferably, being arranged in staggered relation. The portion of plate 25 at each side of flange 25 is overlaid o r covered with sheets 2G of transparent material, such as `glass or celluloid, which may be secured to the portions of plate 25 between the channels 25c by .avsuitable adhesive or by any other suitable means. :The chan` nels 25-` are adapted to receive narrow flat identiiication members 18` such as shown in Fig. 5, which members preferably will snugly fit thelchannels so as to be frictionally held in position.

While the sockets 14a and the sockets 25 in plate 25 may be formed in the plate 14 in various ways, one convenient form of constructing said sockets is, as shown in Fig. 8. In said figure a sheet of material 19 is shown having the channels 19a pressed therein. This operation will be performed in suitable dies on a metal sheet or on a sheet of heavy paper or librous material.

In operation of the device asshown in Figs. 1 to 5, the operatorwill tune the receiving set to receive certain stations, as usual, by swinging the member 12. When a certain station is received, Athe member 12 will point to one oii the channels 14a. The

operator will then insert in said channel an appropriate identiiication member 18 bearing the indication name or number of said station, and similarly, identification members 18 will be located in others of the channels 14a. When the operator again desires to tune in for a certainst'ation shown on one' of the identiication members 18 he will merely have to turn the member 12 to thev position alining with said channel and the instrument will be positioned to receive from said station. When the operator is moving i the member 12 merely at random in order to pick up stations and picksup a certain station, which has been previously received he will at once see by the identification member 1\&`What station it is and will not have to `wait to listen to the announcer for the name of the station. The device therefore not only forms a permanent log which is always in place and in sight directly on the instrument but it also forms an indicator for identifying stations when received.

In the operation of the device shown in Figs. .6 and 7, the instrument will be tuned to receive certain stations by l'moving the member 20 rectilinearly. .When a certain station is received the operator will place an identification card in the appropriate lchannel 25. This card will then form a log and will-showV where said station ycan agaln be on which all of the apparatus is disposed, or

" tuning instruments therein. The device is' applicants be placed on a shell or cabinet having only very convenient on receiving lsets having unit control or only one member which 1s moved for tumng.r Several compames are 'now making such receiving sets and future sets, in all probability, will have only one tuning control member. The device is quite simple and inexpensive and can be produced at comparatively low cost. The same has been amply demonstrated in actual practice and found to be very successful and eiicient.

It will, of course, be understood that various changes may be made in the, form, details, arrangement and proportions of the parts without departing from they scope of invention, which, generally stated, consists in the novel parts and combinations of parts 'disclosed and defined in the appended claims.

What is claimed is:

1. The combination with a 'movable tuning control member of a radio receiving set,

of a device adapted to be secured to "the panel of the set having an arcuate track concentric .with the ath of travel of the con; trol member an over which the control member is adapted to slide, said device having a radial series of sockets with which said control member is adapted to align, and

said sockets being open at their outer ends and closed at their inner ends to receive and retain -identification members bearing in- Vd1c1a of radio sendingstations.

2. The combination with a movable tuning control member of a radio receiving set of an kidentification registering device having a track concentric with the path of travel of the control device and over which the control device is slidably adjusted, and an arcuate.- membervsurroundinggysaid track and having.

a radial series of sockets open-at their outer ends and closed at their inner ends adjacent said track adapted to receive and retain identification membersbearing indicia ofl radio sending stations.

3. A panel for radio tuning apparatus having Aa movablel tuning control member mounted thereon, saidl panel having a radial seriesl of sockets disposed thereon and with each of which said control member is adaptedto aline, said sockets being closed at their ends adjacent said control member and open at their outer ends to receive and retain identification members bearing indicia of radio stations.v i

In testimony whereof I ailix my signature.

,FRANK D. BLAIR. 

